A device that produces electricity by transforming ch; oqfgqjyz8c+ n70y.gemical energy into electrical energy+ q ;ocnqj8g0.yzy7gf is called a

  A car battery

  The total amount of charge that passes through a wire's full crow+xe )l.ud5ooss section at any poin.ox)ewdou + 5lt per unit of time is referred to as

  The direction of convention current is taken to be the directioa1q.8 s*n)geka :qtoxn that

  A coulomb per second is the/o ynn ecx94 ap;1m6rg1 5arjh0wyr k2 same as

  Car batteries are rated in "ampvuf u9+1rfpvfqh (1 m+-hours." This is a measure of their

  The resistance of a wirecgukdu;q*a;(fttz76 s9h c ,h is defined as

  What is $1 \; \Omega$ equivalent to?

  The resistance of a wire dzr xlk-s5 -9r)j.upkis

  The resistivity of a wire depends 3 0k ojosea1p4on

  Which conducting material has the lowest re)0dfud 46jtds1 flqce. eh 2s9sistivity value?

  Consider two copper wires. One has twice the length of the other. How do t4ad dd5kw2y -tneq9cr8d.*p ohe resistivities of these two wires cwed9y4dqdo8r 5.* p 2kcn-atdompare?

  Consider two copper wirku 66m( rcoht,es. One has twice the length of the other. How do the resistances of these two wires c(6t,humrko 6c ompare?

  Consider two copper wires. One has twice the cross-sectional aigr3 zirjp j/,89vb0mrea of the other. How do the resistances9 /8 0p,jgv3r ijzirmb of these two wires compare?

  Consider two copper wires. One has twice the length and twl2-j3c)qiu3b kx s53houx or5ice the cross-sectional area of the other. How do the resistances of these two wires coq2b3 3 5x xo-u5h iok)r3sjulcmpare?

  The length of a wire is doubled and the radius is doubled. Byhg-zsnc90 ( yd g1jsf m.4+5 oznooti4 what factor does the resistance change4ooo gd.-c tgsm4 zn5i1+sjnfhy9(z 0?

  How much more resistavjckzz).i *b+ nce does a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of thez+bcj z)i*.kv same length and made of the same material?

  The resistivity of mo h97 n v,m;ss(7:ud)htz xsklcst common metals

  Negative temperature coeffip ih)1bwy vj:3cients of resistivity

  What is 1 W equivalent t rtl-y8wz r1)m j65k;zqnw rj*o?

  A kilowatt-hour is equims3e ,oizy b;u ),8anvvalent to

  If the resistance in a consiiybmvn7 3;vijr;c19 tant voltage circuit is doubled, the power dissipated1m3ibcr i ; nvyvij9;7 by that circuit will

  If the voltage across a ciaozzb+n/ 5 6*chf(gaci89x jwrcuit of constant resistance is doubled, the power dissipated by that circuit wil/ni6a8ga f9xz5o(*+wc bcjhz l

  If the resistance in a circuit with constant6 v k9yhlbid9; current flowing is doubled, the powerk9;by hli9dv6 dissipated by that circuit will

  If the current flowing through a circu2ndqh,6mobz0 5dqo +qit of constant resistance is doubled, the power dissipated by that circuit wiq+6b q2,dnqdm5ho oz0ll

  During a power demand, the voltage output is re9mcm.or9dqqh19u va;; ha hi; duced by 5.0%. By what percentage is the power on a r; r o9c.m mh;duhqv h99qaa;i1esistor affected?

  A current that is sinusoidal with rrnq5 8 gv3 wfsk-a-5rsespect to time is referred to as

  Consider two copper wires eackofo 95(s91,qdfaj vdum6 m ,zh carrying a current of 3.0 A. One wire has twice the diameter of the other. The ratio of the drift velocity in the smaller diametma 9d ,zuff15 jmd,kosv(o96 qer wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very l ;q.q3s1qo aawow temperatures ar 1awo;qas3 q.qe referred to as

  What current is flowing if 0.67 vmo6j qm;2 1mas+2oj vC of charge pass a point in 0.30 s?

  A charge of 12 C passes 8*cjzp( kzgy(cz d(d5through an electroplating apparatus in 2.0 min. What is the ave(kcz(z dy5j *z8(dp cgrage current?

  How much charge must pass by a ,pd zq: q f5is2s l1./z0suagfpoint in 10 s for the current to be 0.50 A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowing if c4vz q-bco gro8u6i:w74yp6 d$4.0 \times 10^{16} \; electrons$ pass a point in 0.50 s?

  If $3.0 \times 10^{15} \; electrons$ flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current in the wire?

  A coffee maker, which draws 13.5 A of current l*lwn8-+ddpv, has been left on for 10 min. What is the net number of elec dpv llw*nd-8+trons that have passed through the coffee maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on a me-zi5ozbn/ +8ag:amsr m+- z jrtal part by using a current of 2.0 A. How long must the current be allowed to run to deposit this much silver? (The silver ions are singly charged, and the atom+bmri /+rjmgzza -as5 8 nzo-:ic weight of silver is 108.)

  What potential difference is required to cause 5+ew9q,pj v +d4uh*asv t tb:u4.00 A to flow through a resistance ofwvs495 eb * p,tahuu+dt:+vjq 330 W?

  What is the voltage acr a)q zkcwzgu-0p689mv --uf raoss a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 220 Vyei- l07rar:e. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resistanzbxu ysp o oh )17uzb-i6q;c92cebiou2z pcy1;h 9o7quxz) s-6b?

  A 12-V battery is connected to a 100-W resistor. Hkw lsa.)+u/f tz-i h (uhptm*1ow many electrons flow througp* uw su/.(+)t-z mfhlat1ik hh the wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (Th,(0+nh.zjzt t kcq8kcklc(g2 e resistivity of +zhq( n8jz0,(kg cc .l2kt tckcopper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance9w ea*xbflba5vy963 8j ysa7)d myyp * of a circular rod 1.0 cm in diameter and 45 m long, if the reea d9m5**fjwysp6b9lvyy)3xya ba87sistivity is $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wire (re (ezkt6c + v6u84mx2c+7fk kowmxe (ufsistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (residhsk q1w70,nqstivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m longgzlu3 g*tv j )90m0xlj, measures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gauge (the radius is 0.32sl79if4 ov0de1 mm) nichrome wire if it is c 4fdov 0sei79lonnected to a 12.0-V battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of re5 f)(sw. s ijx0:kb0ctxtzushh 2j 7k1dz/0soctangular cross-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 0t1ckht wh7/ :j) s0(zsz2xd is uskbf50ojx.A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0.50 lr2z ,3sx +0p/j ikfobe*:axq mm and a resistivity of $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter coppqsh; vub, s0+ker wire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resis nbxp9 n p:3hq+m6gub0tance of $18 \Omega$ at a temperature of $20 ^{\circ}C$. What is its resistance at a temperature of $120 ^{\circ}C$? (The temperature coefficient of resistivity for carbon is $-5.0 \times 10^{-4} /^{\circ}C$.)

  The temperature coefficient of resistivity of platinum is zyk92d9 *fnxw $3.9 \times 10^{-3} /^{\circ}C$. If a platinum wire has a resistance of R at room temperature ($23 ^{\circ}C$), to what temperature must it be heated in order to double its resistance to 2R?

  A platinum wire is used to determine the meltiqtta,1z+4yo yng point of indium. The resistance of the platinum wire is zt4t,q1+ yaoy$2.000 \; \Omega$ at $20 ^{\circ}C$ and increases to $3.072 \; \Omega$ as indium starts to melt. What is the melting point of indium? (The temperature coefficient of resistivity for platinum is $3.9 \times 10^{-3} /^{\circ}C$.)

  5.00 A is flowing through an* uq1/7mr7xk emcn2 d,(bm wfacd9 6df $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is ratn0 twtybgq4 0iam +3l-eitiz,gc/ 1j; ed at 1200 W. What current will it draw?

  A 150-W light bulb running on 110 Vfh4w oi9ymq 3vcg4r:3 draws how much current?

  What is the nominal resistance of a 1;/tvfwfco/ cj5 d)v)p 00-W light bulb designed to be used in a 120-V cdjfcc/wf)t; 5p o vv/)ircuit?

  A toaster is rated 800 W at 120 V. What is the rese(z z-r:m osf,gdu)x )v0u j.nistance of its heating elemen m o,r.gsx):jfuue z0z-)d(vnt?

  A 200-W resistor is rated at l , 9gx/9dc,1v1sb:imm;wtesdz akd9mv gr 03 $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is ratg 6*/khyxz ah-wo6ah,2fo1rz ed at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used ag(6deodu k zk); la3b4xnr0nf)ss)gnx3f 5-u t 120 V, what current does it draw?

  A lamp uses a 150-W bulb. If it is used7po6 q31-tm i v-xoxlq at 120 V, what is its resistance?

  A 25-W soldering iron runs on 1u kk5pz3m d4p110 V. What is its resistance?

  How much does it cost to operate a 25-W solderffn9dxjr47 rstm 5qgz n5(6b(ing iron for 8.0 hours, if energy cxrfzrds7 4 m( 59b56tgqj(fnnosts $0.08/kWh?

  How much energy does a 100-W light bulb ww1i q-fgce7tykb 9b,3l 0naf/) ks6vuse in 8.0 hours?

  A 1500-W heater is connected d x :)oxr/lx1e2n gu0uto a 120-V line for 2.0 hours. How much heat energy is produc:1 0exrxnld g/ )o2xuued?

  A battery is rated at 12 V and 160 A-hepthm2 2om h(;. How much energy does the battery store?t mpmh2;(2heo

  How much energy does a 25-W soldering iron use g;tmq6n ps/:ct)q6eyg9;r 1u9uv qis in 8.0 hours?

  A 100-W driveway light bfv hd2loy01p)be5 )vb ulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, ef)e 0yv od) b1pv2hl5bstimate the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hoo3ohpe3eg-e;t0 ts b5 fp9h ;purs per day. If electrih et-etsg; ;b33fpo oe 950phpcity costs 10 cents per kWh, how much does it cost to run the computer annually?

  The monthly (30 days) electric bill included the cost of runnie6dd*af f(:mcng a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W light bulbs for 5.0 hr/day. How much did these items contribute to the cost of the monthly electric bill if electrifad *d6e:f (cmcity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and gehwyw/amv0k j3) a :;uenerates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nichrome wire by 10%. (Assume the temperature is unchanged. In reality, the resistivity of the wire will depend on its temperature.) What effect wile3wh0vja:y)m u k;wa/l the repair have on the power dissipated in the heating element?

  14 A of current flows thr *dr:jpvy5nig: f6ig0ough $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs nk.uf8k8a 8ap $1.49, and will run a portable CD player for 6.0 hours. Suppose the battery supplies a current of 25 mA to the player. What is the cost of energy in dollars per kWh?

  A motor that can do work at the rate of 2.0 hpgth10fi4 vpq6cd2m q- has 60% efficiency. How much current does it 62fvqg4cd ih 0qm-t1pdraw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rms current flows 5g+s 57bzi, qgr:nqvmthrough 7r+:b,gnvq5 gm iqzs 5this device?

  A 500-W device is connected to a 120-V ac power source. What peak curridfc qxf j/d1.sh-xq1xbq d-c,)jc(1ent flows through thisq(x )di/--11cbdcx1 c,jfsqhf .xjqd device?

  A 500-W device is connected to a 120-V ac power source. What is the peakgko1 x-7gdt4 e6 oih pqkwn8;jqk/uv r766.vl voltage across thiskkx w7hj8qqgkd 7n 6 6/e6og4oiurpv ;1v.-l t device?

  The diameter of a copper ofz sa+m : e2n6dnv3ke1eb/v5nrf*p 2wire is 0.081 inch. The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number of electron carriers in one cubic centimeter off*v s6 e +n 5/b2 reek:vnoafdnp32m1z copper is $8.5 \times 10^{22}$.)